Porosity

{
  "id": "MLC-T-CHM-009281",
  "term": "Porosity",
  "field": "Chemistry",
  "definition": "The ratio of the volume of all pores and voids within a solid material to the bulk volume of the material itself. This property is expressed as a dimensionless fraction or a percentage and quantifies the amount of empty space. In heterogeneous catalysis, the porosity of a catalyst support affects reactant diffusion and the accessibility of active sites.",
  "subject": "Physical and Biophysical Chemistry",
  "references": [
    "PAC, 1976, 46, 71. 'Manual of Symbols and Terminology for Physicochemical Quantities and Units - Appendix II. Definitions, Terminology and Symbols in Colloid and Surface Chemistry. Part II: Heterogeneous Catalysis' on page 79 (https://doi.org/10.1351/pac197646010071)"
  ],
  "url": "https://mlchart.com/terminology/chemistry/porosity/"
}